A PO BOX number can be less than or more than four digit. For post office boxes, the general rule is that each box has its own ZIP+4 code.
The last four digit is often one of the following:
1. Zero plus the last three digits of the box number (eg. PO BOX 1001, Los Angeles CA 90001-0001).
2. The last four digits of the box number (eg. PO BOX 9991, Twin Peaks CA 92391-9991).
3. If the box number is less than four digits, enough zeros prepended to the front of the box number to produce a four-digit number(eg. PO BOX 1, Shreveport LA 71161-0001).
However, there is no uniform rule, the zip code plus four is for reference only, the ZIP+4 code must be looked up individually for each box in the USPS offical website.
PO BOX 124, SEVERY, KS 67137-0124
PO BOX 125, SEVERY, KS 67137-0125
PO BOX 126, SEVERY, KS 67137-0126
PO BOX 127, SEVERY, KS 67137-0127
PO BOX 128, SEVERY, KS 67137-0128
PO BOX 129, SEVERY, KS 67137-0129
PO BOX 130, SEVERY, KS 67137-0130
PO BOX 131, SEVERY, KS 67137-0131
PO BOX 132, SEVERY, KS 67137-0132
PO BOX 133, SEVERY, KS 67137-0133
PO BOX 134, SEVERY, KS 67137-0134
PO BOX 135, SEVERY, KS 67137-0135
PO BOX 136, SEVERY, KS 67137-0136
PO BOX 137, SEVERY, KS 67137-0137
PO BOX 138, SEVERY, KS 67137-0138
PO BOX 139, SEVERY, KS 67137-0139
PO BOX 140, SEVERY, KS 67137-0140
PO BOX 141, SEVERY, KS 67137-0141
PO BOX 142, SEVERY, KS 67137-0142
PO BOX 143, SEVERY, KS 67137-0143
PO BOX 144, SEVERY, KS 67137-0144
PO BOX 145, SEVERY, KS 67137-0145
PO BOX 146, SEVERY, KS 67137-0146
PO BOX 147, SEVERY, KS 67137-0147
PO BOX 148, SEVERY, KS 67137-0148
PO BOX 149, SEVERY, KS 67137-0149
PO BOX 150, SEVERY, KS 67137-0150
PO BOX 151, SEVERY, KS 67137-0151
PO BOX 152, SEVERY, KS 67137-0152
PO BOX 153, SEVERY, KS 67137-0153
PO BOX 154, SEVERY, KS 67137-0154
PO BOX 155, SEVERY, KS 67137-0155
PO BOX 156, SEVERY, KS 67137-0156
PO BOX 157, SEVERY, KS 67137-0157
PO BOX 158, SEVERY, KS 67137-0158
PO BOX 159, SEVERY, KS 67137-0159
PO BOX 160, SEVERY, KS 67137-0160
PO BOX 161, SEVERY, KS 67137-0161
PO BOX 162, SEVERY, KS 67137-0162
PO BOX 163, SEVERY, KS 67137-0163
PO BOX 164, SEVERY, KS 67137-0164
PO BOX 165, SEVERY, KS 67137-0165
PO BOX 166, SEVERY, KS 67137-0166
PO BOX 167, SEVERY, KS 67137-0167
PO BOX 168, SEVERY, KS 67137-0168
PO BOX 169, SEVERY, KS 67137-0169
PO BOX 170, SEVERY, KS 67137-0170
PO BOX 171, SEVERY, KS 67137-0171
PO BOX 172, SEVERY, KS 67137-0172
PO BOX 173, SEVERY, KS 67137-0173
PO BOX 174, SEVERY, KS 67137-0174
PO BOX 175, SEVERY, KS 67137-0175
PO BOX 176, SEVERY, KS 67137-0176
PO BOX 177, SEVERY, KS 67137-0177
PO BOX 178, SEVERY, KS 67137-0178
PO BOX 179, SEVERY, KS 67137-0179
PO BOX 180, SEVERY, KS 67137-0180
PO BOX 181, SEVERY, KS 67137-0181
PO BOX 182, SEVERY, KS 67137-0182
PO BOX 183, SEVERY, KS 67137-0183
PO BOX 184, SEVERY, KS 67137-0184
PO BOX 185, SEVERY, KS 67137-0185
PO BOX 186, SEVERY, KS 67137-0186
PO BOX 187, SEVERY, KS 67137-0187
PO BOX 188, SEVERY, KS 67137-0188
PO BOX 189, SEVERY, KS 67137-0189
PO BOX 190, SEVERY, KS 67137-0190
PO BOX 191, SEVERY, KS 67137-0191
PO BOX 192, SEVERY, KS 67137-0192
PO BOX 193, SEVERY, KS 67137-0193
PO BOX 194, SEVERY, KS 67137-0194
PO BOX 195, SEVERY, KS 67137-0195
PO BOX 196, SEVERY, KS 67137-0196
PO BOX 197, SEVERY, KS 67137-0197
PO BOX 198, SEVERY, KS 67137-0198
PO BOX 199, SEVERY, KS 67137-0199
PO BOX 200, SEVERY, KS 67137-0200
PO BOX 201, SEVERY, KS 67137-0201
PO BOX 202, SEVERY, KS 67137-0202
PO BOX 203, SEVERY, KS 67137-0203
PO BOX 204, SEVERY, KS 67137-0204
PO BOX 205, SEVERY, KS 67137-0205
PO BOX 206, SEVERY, KS 67137-0206
PO BOX 207, SEVERY, KS 67137-0207
PO BOX 208, SEVERY, KS 67137-0208
PO BOX 209, SEVERY, KS 67137-0209
PO BOX 210, SEVERY, KS 67137-0210
PO BOX 211, SEVERY, KS 67137-0211
PO BOX 212, SEVERY, KS 67137-0212
PO BOX 213, SEVERY, KS 67137-0213
PO BOX 214, SEVERY, KS 67137-0214
PO BOX 215, SEVERY, KS 67137-0215
PO BOX 216, SEVERY, KS 67137-0216
PO BOX 217, SEVERY, KS 67137-0217
PO BOX 218, SEVERY, KS 67137-0218
PO BOX 219, SEVERY, KS 67137-0219
PO BOX 220, SEVERY, KS 67137-0220
PO BOX 221, SEVERY, KS 67137-0221
PO BOX 222, SEVERY, KS 67137-0222
PO BOX 223, SEVERY, KS 67137-0223
PO BOX 224, SEVERY, KS 67137-0224
PO BOX 225, SEVERY, KS 67137-0225
PO BOX 226, SEVERY, KS 67137-0226
PO BOX 227, SEVERY, KS 67137-0227
PO BOX 228, SEVERY, KS 67137-0228
PO BOX 229, SEVERY, KS 67137-0229
PO BOX 230, SEVERY, KS 67137-0230
PO BOX 231, SEVERY, KS 67137-0231
PO BOX 232, SEVERY, KS 67137-0232
PO BOX 233, SEVERY, KS 67137-0233
PO BOX 234, SEVERY, KS 67137-0234
PO BOX 235, SEVERY, KS 67137-0235
PO BOX 236, SEVERY, KS 67137-0236
PO BOX 237, SEVERY, KS 67137-0237
PO BOX 238, SEVERY, KS 67137-0238
PO BOX 239, SEVERY, KS 67137-0239
PO BOX 240, SEVERY, KS 67137-0240
PO BOX 241, SEVERY, KS 67137-0241
PO BOX 242, SEVERY, KS 67137-0242
PO BOX 243, SEVERY, KS 67137-0243
PO BOX 244, SEVERY, KS 67137-0244
PO BOX 245, SEVERY, KS 67137-0245
PO BOX 246, SEVERY, KS 67137-0246
PO BOX 247, SEVERY, KS 67137-0247
PO BOX 248, SEVERY, KS 67137-0248
PO BOX 249, SEVERY, KS 67137-0249
PO BOX 250, SEVERY, KS 67137-0250
PO BOX 251, SEVERY, KS 67137-0251
PO BOX 252, SEVERY, KS 67137-0252
PO BOX 253, SEVERY, KS 67137-0253
PO BOX 254, SEVERY, KS 67137-0254
PO BOX 255, SEVERY, KS 67137-0255
PO BOX 256, SEVERY, KS 67137-0256
PO BOX 257, SEVERY, KS 67137-0257
PO BOX 258, SEVERY, KS 67137-0258
PO BOX 259, SEVERY, KS 67137-0259
PO BOX 260, SEVERY, KS 67137-0260
PO BOX 261, SEVERY, KS 67137-0261
PO BOX 262, SEVERY, KS 67137-0262
PO BOX 263, SEVERY, KS 67137-0263
PO BOX 264, SEVERY, KS 67137-0264
PO BOX 265, SEVERY, KS 67137-0265
PO BOX 266, SEVERY, KS 67137-0266
PO BOX 267, SEVERY, KS 67137-0267
PO BOX 268, SEVERY, KS 67137-0268
PO BOX 269, SEVERY, KS 67137-0269
PO BOX 270, SEVERY, KS 67137-0270
PO BOX 271, SEVERY, KS 67137-0271
PO BOX 272, SEVERY, KS 67137-0272
PO BOX 273, SEVERY, KS 67137-0273
PO BOX 274, SEVERY, KS 67137-0274
PO BOX 275, SEVERY, KS 67137-0275
PO BOX 276, SEVERY, KS 67137-0276
PO BOX 277, SEVERY, KS 67137-0277
PO BOX 278, SEVERY, KS 67137-0278
PO BOX 279, SEVERY, KS 67137-0279
PO BOX 280, SEVERY, KS 67137-0280
PO BOX 281, SEVERY, KS 67137-0281
PO BOX 282, SEVERY, KS 67137-0282
PO BOX 283, SEVERY, KS 67137-0283
PO BOX 284, SEVERY, KS 67137-0284
PO BOX 285, SEVERY, KS 67137-0285
PO BOX 286, SEVERY, KS 67137-0286
PO BOX 287, SEVERY, KS 67137-0287
PO BOX 288, SEVERY, KS 67137-0288
PO BOX 289, SEVERY, KS 67137-0289
PO BOX 290, SEVERY, KS 67137-0290
PO BOX 291, SEVERY, KS 67137-0291
PO BOX 292, SEVERY, KS 67137-0292
PO BOX 293, SEVERY, KS 67137-0293
PO BOX 294, SEVERY, KS 67137-0294
PO BOX 295, SEVERY, KS 67137-0295
PO BOX 296, SEVERY, KS 67137-0296
PO BOX 297, SEVERY, KS 67137-0297
PO BOX 298, SEVERY, KS 67137-0298
PO BOX 299, SEVERY, KS 67137-0299
PO BOX 300, SEVERY, KS 67137-0300
PO BOX 301, SEVERY, KS 67137-0301
PO BOX 302, SEVERY, KS 67137-0302
PO BOX 303, SEVERY, KS 67137-0303
PO BOX 304, SEVERY, KS 67137-0304
PO BOX 305, SEVERY, KS 67137-0305
PO BOX 306, SEVERY, KS 67137-0306
PO BOX 307, SEVERY, KS 67137-0307
PO BOX 308, SEVERY, KS 67137-0308
PO BOX 309, SEVERY, KS 67137-0309
PO BOX 310, SEVERY, KS 67137-0310
PO BOX 311, SEVERY, KS 67137-0311
PO BOX 312, SEVERY, KS 67137-0312
PO BOX 313, SEVERY, KS 67137-0313
PO BOX 314, SEVERY, KS 67137-0314
PO BOX 315, SEVERY, KS 67137-0315
PO BOX 316, SEVERY, KS 67137-0316
PO BOX 317, SEVERY, KS 67137-0317
PO BOX 318, SEVERY, KS 67137-0318
PO BOX 319, SEVERY, KS 67137-0319
PO BOX 320, SEVERY, KS 67137-0320
PO BOX 321, SEVERY, KS 67137-0321
PO BOX 322, SEVERY, KS 67137-0322
PO BOX 323, SEVERY, KS 67137-0323
PO BOX 324, SEVERY, KS 67137-0324